Contents

• Contents
• List of Tables
• List of Figures
• 1 Introduction
  • 1.1 Buckminsterfullerene!
  • 1.2 Molecular Aspects of Solid C₆₀ Compounds
  • 1.3 Structure and Properties of Fullerite
  • 1.4 Structure and Properties of A₃C₆₀
    • 1.4.1 Fm$\bar{3}$m A₃C₆₀ Superconductors
    • 1.4.2 Pa$\bar{3}$ A₃C₆₀ Superconductors
    • 1.4.3 Strong-Coupling Theory of Superconductivity
    • 1.4.4 Parametrization of the Electron Coulomb Interaction
    • 1.4.5 Pairing Mechanism in the Fulleride Superconductors
  • 1.5 Structure and Properties of A₁C₆₀
    • Crystalline Phases
    • 1.5.1 Properties of Polymeric o-A₁C₆₀
    • 1.5.2 Electronic Structure of o-A₁C₆₀
• 2 Description of the Experiments
  • 2.1 $\mu {\cal SR}$ Techniques
    • 2.1.1 Properties of $\mu^+$
    • 2.1.2 Production of Spin Polarized Muons and $\mu {\cal SR}$
    • 2.1.3 $\mu {\cal SR}$ Experimental Setup and Data
  • 2.2 Sample Handling
  • 2.3 Alkali Intercalation of C₆₀
• 3 LF (T₁) Relaxation and Superconductivity
  • 3.1 Spin Exchange Relaxation of Muonium
  • 3.2 Spin Relaxation in Superconductors
    • 3.2.1 General
    • 3.2.2 Low Temperature Behaviour
    • 3.2.3 Extensions
    • 3.2.4 Influence of the Vortex State
• 4 $\mu {\cal SR}$ in A₃C₆₀
  • 4.1 $\mu^+$ Sites in A₃C₆₀
  • 4.2 Transverse Field: The Vortex State Field Distribution
  • 4.3 Longitudinal Field: T₁ Relaxation of Mu@C₆₀
    • 4.3.1 T₁(T) in Rb₃C₆₀ and K₃
    • 4.3.2 T₁(T) and Quench Rate Dependence in Na₂Cs
• 5 The Time Dependent Spin Polarization in Zero Field
• 6 $\mu {\cal SR}$ in A₁C₆₀
  • 6.1 Summary of Previously Reported $\mu {\cal SR}$ Results
  • 6.2 Muonium in A₁C₆₀
  • 6.3 $\mu {\cal SR}$ in the Magnetic State of A₁C₆₀
    • 6.3.1 Zero Field $\mu {\cal SR}$ in Rb₁C₆₀ & Cs₁C₆₀
    • 6.3.2 High Transverse Field in Rb₁C₆₀
  • 6.4 Inferences about the Magnetic Structure in A₁C₆₀
• 7 Conclusions
  • 7.1 A₃C₆₀
  • 7.2 A₁C₆₀
• 8 Nuclear moments Occuring Naturally in the Alkali Fullerides
• References